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package homework.demo4;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

/**

 * @author Administrator
 */
public class Notices {
    public String getTodayName(){
        Date date=new Date();
        SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd");
        String dateString=formatter.format(date);
        return dateString;
    }
    public String getTomorrowName(){
        Date date=new Date();
        Calendar calendar=new GregorianCalendar();
        calendar.setTime(date);
        calendar.add(calendar.DATE,1);
         SimpleDateFormat formatter=new SimpleDateFormat("yyyy-MM-dd");
         String dateString=formatter.format(date);
         return dateString;
    }
    public void getTodayNotices() throws FileNotFoundException,IOException{
        File file=new File("notices/"+getTodayName()+".txt");
        if(file.exists()){
            FileReader f=new FileReader(file);
            BufferedReader br=new BufferedReader(f);
            String temp=null;
            while((temp=br.readLine())!=null){
            System.out.println(temp);
        }
        }else{
            System.out.println("今天没有什么特别要提醒的。");
        }  
        
    }
public boolean setTomorrowNotice(String notice) throws IOException{
   
        File file=new File("notices");
        if(!file.exists()){
            file.mkdir();           
    }
        file=new File("notices/"+getTomorrowName()+".txt");
        if(! file.exists()){
            file.createNewFile();
        }
        FileOutputStream f=new FileOutputStream(file,true);
        PrintWriter p=new PrintWriter(f,true);
        p.println(notice);
        System.out.println("成功添加一条明天的备忘信息");
        return true;
}
    public static void main(String[] args) throws IOException{
        Notices n=new Notices();
        String date =n.getTodayName();
        System.out.println("date String");
        String tomorrowString=n.getTomorrowName();
        System.out.println("tomorrow String");
        n.setTomorrowNotice("明天去取钱");
    }
}
